curl / Docs / Security Problems / Authentication Buffer Overflows

Authentication Buffer Overflows

Project curl Security Advisory, February 21st 2005 - Permalink

VULNERABILITY

Due to bad usage of the base64 decode function to a stack-based buffer without checking the data length, it was possible for a malicious HTTP server to overflow the client during NTLM negotiation and for an FTP server to overflow the client during krb4 negotiation. The announcement of this flaw was done without contacting us.

INFO

The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2005-0490 to this issue.

CWE-121: Stack-based Buffer Overflow

(This flaw was originally treated as two separate ones by the curl project, but due to it using a single CVE number we've reconsidered.)

AFFECTED VERSIONS